/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#include <QCoreApplication>

#include <QDir>

#include "hswidgetcomponentregistry.h"

#include "hswidgetcomponent.h"

#include "hsapp_defs.h"

#include "caservice.h"

#include "caquery.h"

#include "canotifier.h"

/*!

*/

HsWidgetComponent::~HsWidgetComponent()

{

}

/*!

*/

QString HsWidgetComponent::rootPath() const

{

    return mRootPath;

}

/*!

*/

QString HsWidgetComponent::uri() const

{

    return mUri;

}

/*!

*/

HsWidgetComponent::HsWidgetComponent(const QString &uri, QObject *parent)

  : QObject(parent),

    mUri(uri)

{

    listenChangeEvents();

	resolveRootPath();

	installTranslator();

}

/*!

*/

void HsWidgetComponent::listenChangeEvents()

{

	CaQuery query;

    query.setEntryTypeNames(QStringList(widgetTypeName()));

	CaNotifierFilter filter(query);  

    CaNotifier *notifier = CaService::instance()->createNotifier(filter);

    notifier->setParent(this);

    connect(notifier,

            SIGNAL(entryChanged(CaEntry,ChangeType)),

            SLOT(onEntryChanged(CaEntry,ChangeType)));

}

/*!

*/

void HsWidgetComponent::resolveRootPath()

{

	CaQuery query;

    query.setEntryTypeNames(QStringList(widgetTypeName()));

	query.setAttribute(widgetUriAttributeName(), mUri);

	QList< QSharedPointer<CaEntry> > widgetEntries = CaService::instance()->getEntries(query);

    if (widgetEntries.isEmpty()) {

		return;

	}

    QSharedPointer<CaEntry> entry = widgetEntries.first();

    mRootPath = entry->attribute(widgetPathAttributeName());

}

/*!

*/

void HsWidgetComponent::installTranslator()

{

    QStringList possiblePaths;

#ifdef Q_OS_WIN32

    possiblePaths << "resource/qt/translations";

#else

    QDir currentDir(mRootPath);

    if (!currentDir.exists() || mRootPath.isEmpty()) {

        return;

    }

    while (currentDir.cdUp()) {}

    QString drive = currentDir.path();

    drive.append("resource/qt/translations");

    possiblePaths << drive;

    // if it is not in installed,then check z drive

    possiblePaths << "z:/resource/qt/translations";

#endif

    for(int i=0; i<possiblePaths.count(); ++i) {

        QString candidate = QDir::toNativeSeparators(possiblePaths.at(i));   

        if (QDir(candidate).exists()) {

            QString fileName(mUri);

		    fileName.append("_");

		    fileName.append(QLocale::system().name());

            if (mTranslator.load(fileName, candidate)) {

                QCoreApplication::installTranslator(&mTranslator);

		        break;

            }

	    }

    }

}

/*!

*/

void HsWidgetComponent::uninstallTranslator()

{

    QCoreApplication::removeTranslator(&mTranslator);

}

/*!

    This slot reacts to \a entry change that is described with 

    \a changeType. On remove change type, aboutToUninstall() signal is

    emitted.

*/

void HsWidgetComponent::onEntryChanged(const CaEntry &entry, ChangeType changeType)

{

    if (changeType == RemoveChangeType) {

        QString uri = entry.attribute(widgetUriAttributeName());

        if (uri == mUri) {

           	uninstallTranslator();

			emit aboutToUninstall();

        }

    }

}